header bg

Question:

Determine k so that the point (−1, k) is a solution of y = −5x+ 3.

A k = 8
Explaination

Substitute (x, y) = (−1, k) into the equation y = −5x+ 3.
Original equation.
y = −5x+ 3
Substitute: −1 for x, k for y.
k = −5(−1) + 3
Multiply: −5(−1) = 5.
k = 5 + 3
Add: 5 + 3 = 8.
k = 8
Thus, k = 8.