Graphing Circles on the TI-84 Plus CE

What is the standard equation of a circle?

• x + y^2 = r^2

• x^2 + y = r^2

• x^2 - y^2 = r^2

• x^2 + y^2 = r^2

When graphing a circle on the TI-84 Plus CE, why do we need to solve the equation for y?

• To determine the center of the circle

• To ensure the calculator can plot the graph

• To simplify the equation

• To find the radius

What is the correct way to enter the negative square root function in the TI-84 Plus CE calculator?

• Use the multiplication button

• Use the division button

• Use the negative button

• Use the subtraction button

How should the window settings be adjusted for a circle with a radius of 7?

• X Min: -7, X Max: 7, Y Min: -7, Y Max: 7

• X Min: -5, X Max: 5, Y Min: -5, Y Max: 5

• X Min: -10, X Max: 10, Y Min: -10, Y Max: 10

• X Min: -15, X Max: 15, Y Min: -15, Y Max: 15

What is the first step in graphing a circle equation on the TI-84 Plus CE?

• Multiply both sides by x

• Subtract x^2 from both sides

• Add x^2 to both sides

• Divide both sides by y