FAStorm322 FAStorm322

19-12-2018
Mathematics

contestada

without plotting find a point on the graph of x+y=21 whose y coordinate is three more than the x coordinate

Respuesta :

28-12-2018

y-coordinate is 3 more than x-coordinate: y = x + 3.

Substitute to the equation x + y = 21:

x + x + 3 = 21 subtract 3 from both sides

2x = 18 divide both sides by 2

x = 9

y = 9 + 3

y = 12

Answer: (9, 12).

Answer Link

Otras preguntas

Translate this phrase into algebraic expression. 8 more than twice Julie's age.

Mark for review (Will be highlighted on the review page) 1. Solve this equation: 80 = 3y + 2y + 4 + 1.

(LC)To persuade using pathos, a writer must appeal to the reader or listener's sense of

The vertex of this parabola is at (5,-4). Which of the following could be its equation? A) y=2(x+5)2 +4 B) y=2(x+5)2 -4 C) y=2(x-5)2 +4 D)y=2(x-5)2 -4

what is the practice of putting the policies of the government into practical application? a. legislative assisants b. practice of law c. public administration

Meg described four triangles as shown below: Triangle P: All sides have length 7 cm. Triangle Q: Two angles measure 55°. Triangle R: Two sides have length 8 cm

PLEASE HELP ME URGENT Check all that apply. tan(theta) is undefined for theta= A. 3pi/2 B. pi/2 C. 0 D. pi

What did dr drip say to the bleeding kid answer key worksheet?

The _____ of an angle is the ratio of the opposite leg length to the hypotenuse length. A) Tangent B) Cosine C) Sine

Which type of informative speech has the greatest potential to cross over into the persuasive realm?