How can you determine the slope and the y-intercept of a line from a graph

What is the distance from zero if a quadratic function has a line of symmetry at x=-3 and a zero at 4

The length of a rectangle plus its width is 24 cm. the area is 143 square cm. what are the length and width of the rectangle?

There are three grizzly bears in the city zoo. yogi weighs 400.5 pounds, winnie weighs 560.35 pounds, and nyla weighs 628.29 pounds. what is the average weight of the three bears? (hint: what do they weigh all together? ) a. 502.97 pounds c. 604.38 pounds b. 529.71 pounds d. 794.57 pounds