Question

Find the value of x and the value of y for which (x, 14) and (18, y) are points on the graph. y = 0.5x+12.

Answer 1

we just simply substitute the values of the points given so as to obtain the missing coordinates

@ (x, 14)

y = 0.5x +12
14 = 0.5x +12
x = 4

therefore the point is at (4, 14)

@ (18, y)

y = 0.5x + 12
y = 0.5*(18) +12
y = 21

therefore the point is at (18, 21)