Find three solutions for y=-2x-1

(1, - 3)

(2, - 5)

(3, - 7)

Step-by-step explanation:

Randomly choose three values for "x". Substitute each of them separately into the formula to find the "y". Then write the solution as an ordered pair (x, y).

I will choose x=1, x=2 and x=3.

When x=1:

y = - 2x - 1

y = - 2 (1) - 1

y = - 2 - 1

y = - 3

(1, - 3)

When x=2:

y = - 2x - 1

y = - 2 (2) - 1

y = - 4 - 1

y = - 5

(2, - 5)

When x=3:

y = - 2x - 1

y = - 2 (3) - 1

y = - 6 - 1

y = - 7

(3, - 7)

(1,-3), (2,-5), and (3,-7)

An easy way to find this is set you a definite y value. So try - 3 as the value for y. Solve for x as normal so - 3=-2x-1. Add 1 on both sides to get - 2=-2x. Divide on both sides by - 2 and get 1=x. Since the slope is - 2 you keep subtracting - 2 from - 3 and you'll get - 5 when x=2 and so on.