Which answer is an equation in point-slope form for the given point and slope? Point: (1, 9); Slope: 5
1. y+9=5 (2 – 1)
2. y-1=5 (2 +9)
3. y-9=5 (2+1)
4. y-9=5 (2 – 1)

Which values for a and b will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b

Agroup of students want to create a garden. they do not know the exact measurements but they propose using a variable to represent the length and width of the garden. the length of the garden is 10 feet longer than double the width. use a single variable to write algebraic expressions for both the length and width of the garden. write an algebraic expression for the area of the garden. use mathematical terms to describe this expression.

Amodel rocket is launched from a roof into a large field. the path of the rocket can be modeled by the equation y = -0.04x^2 + 8.6x + 4.8, where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. how far horizontally from its starting point will the rocket land? a. 0.56 m b. 215.56 m c. 431.11 m d. 215.74 m