Question

can someone help me with this

Answer 1

y = -4x - 19
y = 2x − 1

Answer 2

since the same y equals to something, then both equal to each other, so solve for x:

-4x - 19 = 2x − 1

Answer 3

-3?

Answer 4

y=-19/6
x=-19/3

Answer 5

@automaticloveletter correct, so x=-3

Answer 6

so now plug x=-3 back into any equation and solve for y

Answer 7

Sorry did the math wrong v.v

Answer 8

It's alright

Answer 9

y = 2(-3) − 1

solve for y

Answer 10

y=-7

Answer 11

and then -7 thanks i got it :)

Answer 12

(:

Answer 13

To solve a system of equations by substitution you need to follow these three steps: 1. Solve one equation for one variable. 2. Substitute what that variable is equal to in the other equation and solve for the other variable. Now one variable is known. 3. Substitute the known variable into one of the two original equations, and solve for the other variable. Let's do it here, one step at a time: Step 1. Since the first equation is already solved for y, step 1 is done, y = (1/2)x - 6 Step 2. Substitute what y is equal to in the other equation: 2x + 6y = 19, but y = (1/2)x - 6, so 2x + 6( (1/2)x - 6) = 19 Distribute the 6 on the left side: 2x + 3x - 36 = 19 Combine 2x and 3x: 5x - 36 = 19 Add 36 to both sides: 5x = 55 Divide both sides by 5: x = 11 Step 3. Substitute x in one of the two original equations: y = (1/2)x - 6 y = (1/2)11 - 6 y = 11/2 - 6 Use LCD of 2 to subtract fractions: y = 11/2 - 12/2 y = -1/2 hope this help