Do the vertical line test
16. Function
17. Not
18. Not
19. Function
Answer:
y = -8/5
Step-by-step explanation:
Step 1: Write equation
5/8y = -1
Step 2: Solve for <em>y</em>
- Divide both sides by 5/8: y = -8/5
Step 3: Check
<em>Plug in y to verify it's a solution.</em>
- Substitute: 5/8(-8/5) = -1
- Multiply: -40/40 = -1
- Divide: -1 = -1
