Kaplan ACT Practice Question of the Day

ACT Question for December 2nd

What is the slope of any line parallel to the line 8x + 9y = 3 in the standard (x, y) coordinate plane?

A) -8

B) -8/9

C) 8 3

D) 3

E) 8

Correct

Incorrect

The correct answer is (B).

Getting to the Answer: Parallel lines in the standard (x, y) coordinate plane have the same slope. When expressed in slope-intercept form, y = mx + b, the slope is m. Convert the given equation into slope-intercept form. Subtract 8x from both sides of the equation, and then divide by 9:

9y=-8x+3

y=^-8⁄₉x+³⁄₉

Therefore, the slope of any line parallel to 8x + 9y = 3 is -⁸⁄₉.

(A) Incorrect: this does not divide both sides by 0

(B) Correct: this matches the correct calculation

(C) Incorrect: this divides the coefficient of x in the original equation (8) by the constant in the original equation (3)

(D) Incorrect: this is the value of 8x + 9y in the original equation

(E) Incorrect: this is the coefficient of x in the original equation

Want Another Practice Question?

Spacing out study makes it stick. Get practice questions emailed to you every day.

I am 13 years or older.

Are you a permanent resident of Canada?

Yes

Canada Consent

Please check this box if you’d like to receive commercial email messages from Kaplan regarding its educational programs and services. You may withdraw your consent at any time. Kaplan, Inc., Customer Care, 750 Third Avenue, New York, NY 10017. Phone at 1-800-KAP-TEST, or email customer.care@kaplan.com.

By clicking "Sign Up", I agree to Kaplan's Terms and Conditions and Privacy Policy. California Notice at Collection.

Ease Into Prep with an ACT^® Question of the Day

ACT Question for December 2nd

Want Another Practice Question?

Ready for a Higher Score on the ACT?

Ease Into Prep with an ACT® Question of the Day

ACT Question for December 2nd

Want Another Practice Question?

Ready for a Higher Score on the ACT?

Ease Into Prep with an ACT^® Question of the Day