Write the equation of the line
(a) with slope of 2/3 and containing (6, 5).
(b) that is vertical and passes through (-4, 6).
(c) horizontal through (7, -2).
(a) y= 2/3 X + 1
(b) x = -4
(c) y = -2
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Solve the problem.When going more than 38 miles per hour, the gas mileage of a certain car fits the model 
where x is the speed of the car in miles per hour and y is the miles per gallon of gasoline. Based on this model, at what speed will the car average 15 miles per gallon? (Round to nearest whole number.)
A. 149 B. 48 C. 73 D. 98
3x(7x + 9y) + 8x(y + 4) =
a. 21x + 27xy + 8y + 32x b. 21x2 + 35xy + 32 c. 21x + 35xy + 32y + 4 d. 21x2 + 32x + 35xy e. 21x2 + 17xy + 8x + 4
Solve the problem.The outfield wall in a baseball park is in the shape of a quarter circle. If the radius of the circle is 7 feet, how long is the wall? Use 3.14 for ?. Round your answer to the nearest tenth.
A. 5.5 ft B. 22.0 ft C. 9.0 ft D. 11.0 ft
Determine whether the formula determines y as a function of x.y = 
A. No B. Yes