Answer:
(6, -9) → x = 6, y = -9
Step-by-step explanation:
These are linear functions. The graph is a straight line. We only need two points to draw a graph.
We choose any two values of x, substitute and calculate the value of y.
For y = -2x + 3
x = 0 → y =-2(0) + 3 = 0 + 3 = 3 → (0, 3)
x = 1 → y = -2(1) + 3 = - 2 + 3 = 1 → (1, 1)
For y = -4x + 15
x = 3 → y = -4(3) + 15 = -12 + 15 = 3 → (3, 3)
x = 4 → y = -4(4) + 15 = -16 + 15 = -1 → (4, -1)
Look at the picture.
The solution is the coordinates of the point of intersection of lines.
