Answer:
18+316−251−11
=72
Step-by-step explanation:
18+316−251−11
=334−251−11
=83−11
=72
Only the third one makes x=-1 true
Answer:
(-2, 1)
Step-by-step explanation:
Systems of equations can be solved using different methods. For this set of systems, you can multiply each equation by a factor in order to eliminate a variable and solve for the other variable:
-3(-5x - 3y = 7) or 15x + 9y = -21
5(-3x - 4y = 2) or <u>-15x -20y = 10</u>
-11y = -11
y = 1
Solve for x: -5x - 3 = 7
Add 3 to both sides: -5x -3 + 3 = 7 + 3 or -5x = 10
Solve for x: x = -2
(-2, 1)
Hi there!
We can calculate slope using the following formula:
Plug in the corresponding points:
Simplify:
