Write the quadratic function represented by the graph.

Okay, a quadratic function is always in the form ax^2 + bx + c. Plug in the values and simplify to find the full equation:
a + b + c = 0 (1,0)
49a + 7b + c = 0 (7,0)
36a + 6x + c = 5 (6,5)
Now solve these equations to find a, b, and c.
a + b + c = 49a + 7b + c
50a + 6b = 0
6 = -50a/6
(Solve from here yourself.)

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.

Abit confused about what you mean, but i think you might be referring to slope intercept form: y = mx + bin that case b, or the y intercept is already given.(0,-1)find the slope by using the formulay2 - y1/x2 - x1the final slope will be 4/2, equivalent to 2.now your equation should look like thisy = 4/2x -1sorry if this didn’t you out!