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12 Cards in this Set
- Front
- Back
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What is the general equation of a straight line? |
y = mx + c |
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What formula can help you find the equation of a straight line when you have both the gradient and a point on the line? |
y - b = m (x - a) |
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What is the gradient formula? |
m = (y2-y1) /(x2-x1) |
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Using function notation, what is another way to write the general equation? |
f(x) = mx + c |
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How do you write the y-intercept? |
You always write it as a coordinate. |
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What must you always check for when removing brackets with a term on the outside? |
You must always check if the outside term is positive or negative. |
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What is the order of operations? |
BOMDAS - Brackets, 'of' (powers), multiply / divide, add / subtract. |
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What equation do you use to plot coordinates on a straight line graph? |
The general equation (y = mx + c) |
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What is the difference between the gradient and the y-intercept? |
The gradient is the constant degree that a straight line is at, while the y-intercept is where the line crosses the y-axis. |
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How do you solve simultaneous equations using the algebraic method? |
You make sure that there is either a same number of 'x's or 'y's (can be positive or negative). If they are positive and negative, you add the equations; if they are both positive or negative, you subtract them. Remember, once you have found both x and y, you must write them as coordinates. |
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What is a good way to remember how to change subject? |
"Opposite side, opposite formula." |
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What must you do to ensure you have the right gradient? |
Check that the 'y' is not multiplied by anything. |
