Determine whether the equation defines y as a function of x. y2 + x = 6
A. function
B. not a function
Answer: B
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Solve. Round to the nearest tenth.A 26-ft-tall ladder is placed so that it reaches 24 ft up on the wall of a house. How far is the base of the ladder from the wall of the house?
A. 1252 ft B. 35.4 ft C. 10 ft D. 100 ft
Solve the problem.A railroad tunnel is shaped like a semi-ellipse. The height of the tunnel at the center is 45 ft and the vertical clearance must be 18 ft at a point 21 ft from the center. Find an equation for the ellipse.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Find the slope and y-intercept of the line.x + 6y = 1
A. slope = 1; y-intercept = 1
B. slope = -6; y-intercept = 6
C. slope = 
; y-intercept = 
D. slope = - 
; y-intercept = 
Solve.The perimeter of the rectangle is 42 feet. Find its width.
A. 8 ft B. 29 ft C. 16 ft D. 9 ft