Not necessarily.
x = -1/3 and y = 7/12
One can say that X+7 equals 4Y but we can not get an answer for X or an answer for Y without knowing one of them first.
x + 5y = 75y = -x + 7y = -(1/5)x + (7/5)The y-intercept of this line is +(7/5) or 1.4There is no negative y-intercept.
x = 4 and y = 7
Not necessarily.
A suitable equation for that would be y is equal to negative 2 times x plus five
x = -1/3 and y = 7/12
One can say that X+7 equals 4Y but we can not get an answer for X or an answer for Y without knowing one of them first.
x + 5y = 75y = -x + 7y = -(1/5)x + (7/5)The y-intercept of this line is +(7/5) or 1.4There is no negative y-intercept.
-3/5 + y = -4/7 Therefore, -4/7 - -3/5 = y Therefore, y = 1/35 or one thirty-fifth.
x = 4 and y = 7
x + 2y = 7 2y = -x + 7 y = -(x-7)/2 => -x/2 + 7/2 2x - y = 7 -y = -2x + 7 y = 2x + 7 Since -1/2 is the negative reciporical of 2, the slopes of these equations are perpendicular. Therefore, these two lines are perpendicular.
If the expression is (x - y)2, the solution is (7 - -2)2 = (7+2)2 = 92 = 81. If the expression is x - y2, the solution is 7 - (-2)2 = 7 - 4 = 3.
If y equals 7, then y equals 7. This equation is already in final, solved state. Read it out loud and you will understand.
y=-x^2 +7 The range is the possible values of y for all acceptable values of x. In this case x can be anything, so at its smallest value of 0, y=7, and at its largest value of infinity, y=negative infinity, so the range is negative infinity to 7.
Y+7=9 equals 2+7=9.