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Solving a system of equations

12/9/2016

If 2x + 3y = 4 and 5x + 6y = 7, what is the value of 8x + 9y ?
A.) -10
B.) -1
C.) 2
D.) 7
E.) 10

Finding the y-intercepts of a circle

12/9/2016

In the standard (x,y) coordinate plane, an equation of a circle is x² + y² = 64. At what points does the circle intersect the y-axis?
A.) (0,1) and (0,-1)
B.) (0,8) and (0,-8)
C.) (0,9) and (0,-9)
D.) (0,10) and (0,-10)
E.) the circle does not intersect the y-axis

Evaluating a function

12/3/2016

If f(x) = x² + 3, then f(x + y) = ?
A.) x² + 2xy + y² + 3
B.) x² + 2xy + y²
C.) x² + 2xy + 3
D.) x² + 3 + y
E.) x² + y²

Solving a system of equations

Finding the y-intercepts of a circle

Evaluating a function

Categories

ACT and SAT
Archives

Solving a system of equations

Finding the y-intercepts of a circle

Evaluating a function

Categories

ACT and SAT ​Archives

ACT and SAT
Archives