Answers:
y = 7 when x = 1
y = 10 when x = 2
y = 13 when x = 3
Step-by-step explanation:
To solve this, we plug in the given values for x, 1, 2, and 3.
Scenario 1. What is y when x is 1?
y = 3x + 4
y = 3(1) + 4
y = 3 + 4
y = 7
Scenario 2: What is y when x is 2?
y = 3x + 4
y = 3(2) + 4
y = 6 + 4
y = 10
Scenario 3: What is y when x is 3?
y = 3x + 4
y = 3(3) + 4
y = 9 + 4
y = 13
Interesting pattern: y appears to be 3 times x
In other words: as x increases by 1, y will increase by 3. The slope of this line is y/x or 3/1 or simply, 3.
