math
posted by josh .
carrie says that one solution to y=3x5 is (4,7).Describe two ways to check if her statement is true.use at least one way to check her answer.

Two ways:
(1) Plot y = 3x  5 and check if it passes through the point (4,7).
(2) Substitute the xcoordinate of the point given (which is 4) to the equation, and solve for y. If the resulting y is equal to 7, it is a solution to the equation.
Let's do #2 to check:
y = 3x  5
y = 3*4  5
y = 12  5
y = 7
therefore, it is indeed a solution to the equation.
Respond to this Question
Similar Questions

Probability
Roll two fair dice. what is the probability that you get a 2 and a 5 without regard to which is on which die? 
maths
each of the students in a class writes a dirrerent 2 digit number on the whiteboard. the teacher claims that no matter what the students write, there will be at least three numbers on the whiteboard whose digits have the same sum. … 
math
Describe two ways to determine whether or not a given point is a solution of a line. Which way is more accurate? 
Health please check my answer
Please check my answer thanks Is this statement True or False A 16 year old patient is having problems with a swollen gland on the left side of her neck, The physican is most likely to use visualization to determine if the gland has … 
Probability  CHECK
Could someone check my answers for these questions: 62. Powerball is played with 55 white balls, numbered 1 through 55 and 42 red balls, numbered 1 through 42. Five white balls and one red ball are drawn. In how many ways can a player … 
Math
Label each statement TRUE or FALSE. a. The sum of two onetoone functions is onetoone. b. The product of two onetoone functions is onetoone. c. If f is a onetoone function and k is a real number (constant), then the function … 
Please checkReiny
Could you check these two problems? 3sqrt (y+2) = 3 is y = 25 Answers were: true or false I said true because I did it like this Square both sides=y + 2 = 3^3 y+2 = 27 y = 25 and sqrt (2y6) = 3y for y answes are: no solution 5 3,5 
biology can someone check
Decide if each of the following statements is true.If it is not rewrite the parentheses part to make it true. 1) Scientific methods include observation,(forming a hypothesis, and experiment). ans: false ;answer questions; solve problems … 
math
Lara wrote the statements shown in the chart. Statement One: If two lines intersect, then they intersect at exactly one point Statement Two: In a right triangle, the square of the length of the hypotenuse is equal to the sum of the … 
Math  Check please!
I. 28/4 7 *** 7  1/7 1/7 II. Which equation represents “fifteen more than r is sixtyone”?