Exam 5: Formulas, Functions, Linear Equations, and Inequalities in Two Variables

Use the slope formula to find the slope. (Hint: To learn the formula, write the complete formula each time you use it.) $( - 2,0 ) \text { and } ( 0,5 )$

Use the slope formula to find the slope. (Hint: To learn the formula, write the complete formula each time you use it.) $( - 2,9 ) \text { and } ( 2,9 )$

In the problem below, state whether the described change gives a parallel line or a steeper line and write the new equation. The total cost, in dollars, of gasoline is C = 2.30g, where g is in gallons. The gasoline rises in price by $0.80 per gallon.