When quinn got home, he turned the air conditioner on.
qqq represents the temperature in quinn's home (in degrees celsius) after ttt minutes.
q=42-0.7tq=42−0.7tq, equals, 42, minus, 0, point, 7, t
what was the temperature when quinn returned home?

Where m is the slope of the line and b is the y-intercept of the line, or the y-coordinate of the point at which the line crosses the y-axis. to write an equation in slope-intercept form, given a graph of that equation, pick two points on the line and use them to find the slope. this is the value of m in the equation.