iGCSE Mathematics (0580) :E3.4 Interpret and obtain the equation of a straight line graph.iGCSE Style Questions Paper 2

Question

 The curve \(y=x^{2}-2x+1\) is drawn on a grid.
A line is drawn on the same grid.
The points of intersection of the line and the curve are used to solve the equation \(x^{2}-7x+5=0\)
Find the equation of the line in the form y = mx + c.
y = …………………………………………..

Answer/Explanation

y=5x-4

Question

y = mx + c
Find the value of y when m = −2, x = −7 and c = −3.
y = …………………………………………..

Answer/Explanation

Ans:

11

Question

Line L passes through the points (0, -3) and (6, 9).

(a) Find the equation of line L.[3]

(b) Find the equation of the line that is perpendicular to line L and passes through the point (0, 2).[2]

Answer/Explanation

Ans:

26(a) y = 2x-3 oe

26(b) y=\(-\frac{1}{2}x+2\) oe

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