Please explain : y = -x + 8. y = 4x - 7 solve system of equation?

Question

25-01-2017
Mathematics

contestada

Please explain : y = -x + 8. y = 4x - 7 solve system of equation?

Respuesta :

Otras preguntas

A glassblower makes glass decanters and glass trays on a weekly basis. Each item requires 1 pound of glass, and the glassblower has 15 pounds of glass available

What is the difference between judicial activism and judicial restraint

In the Yap civilization of the South Pacific prior to 1920, large, heavy stones in the shape of a wheel were used as money. Which function of money was probably

prove that cos2α = 1-tan²α / 1+tan²α

You are lowering two boxes, one on top of the other, down a ramp by pulling on a rope parallel to the surface of the ramp (Fig. E5.33). Both boxes move together

2. If a country is seeking to attract foreign investment in the form of manufacturing or distribution related facilities, list at least Seven (7) things the gov

A slender rod 100.00cm long is used as a meter stick. Twoparallel axes which are perpendicular to the rod are considered.The first axis passes through the 50cm

What was the goal of the conservatives in the concert of europe

While performing an ELISA, a lab technician fails to rinse away unbound detection antibody from the wells before adding the substrate for the reporter enzyme. W

Rick is buying a small sailboat for $3,000 with a down payment of $1,000. The bank approved a simple interest flat rate loan for 2 years at 6% APR. How much are

graceanne3 graceanne3 · Answer 1 · 2017-01-25T04:49:15+01:00

You're fist step is to choose a way to solve this system. My favorite is substitution. Plug in -x+8 for y in the second equation. The reason you are able to do this is because the substitution property which you learn in geometry. So now you have the equation -x+8=4x-7. Now add seven to both sides and subtract x from both sides. You should be left with 15=3x. Now you simply divide by 3 and the answer is x=5