C-12-Q078mediumsingle_mcq

In Example 9, the graphs of $3x - y = 3,\; 5x + y = 21$ intersect at point $P$ whose coordinates are —

a $(3, 6)$
b $(6, 3)$
c $(0, 3)$
d $(3, 0)$

ব্যাখ্যা

Adding the two equations eliminates $y$ : $(3x - y) + (5x + y) = 3 + 21 \Rightarrow 8x = 24 \Rightarrow x = 3$ . Substituting back gives $y = 6$ , so $P = (3, 6)$ .

এই অধ্যায়ের আরও প্রশ্ন

C-12-Q079In Example 10, the graphical solution of is —
C-12-Q080In Example 11, the graphical solution of gives —
C-12-Q081The graphs of are —
C-12-Q082The graphs of are —
C-12-Q083In the equation , if then —
C-12-Q084In the equation , if then —
C-12-Q085If and , then —
C-12-Q086If and , then —
C-12-Q087The system is —
C-12-Q088If the digit at the tens place is and units place is , the two-digit number is —

Simple Simultaneous Equations in Two Variables — সব প্রশ্ন দেখুন (152টি) →

In Example 9, the graphs of $3x - y = 3,\; 5x + y = 21$ intersect at point $P$ whose coordinates are —

(3, 6)

(6, 3)

(0, 3)

(3, 0)

ব্যাখ্যা

Adding the two equations eliminates $y$ : $(3x - y) + (5x + y) = 3 + 21 \Rightarrow 8x = 24 \Rightarrow x = 3$ . Substituting back gives $y = 6$ , so $P = (3, 6)$ .

In Example 9, the graphs of 3x−y=3, 5x+y=213x - y = 3,\; 5x + y = 213x−y=3,5x+y=21 intersect at point PPP whose coordinates are —

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

In Example 9, the graphs of 3x−y=3, 5x+y=213x - y = 3,\; 5x + y = 213x−y=3,5x+y=21 intersect at point PPP whose coordinates are —

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

In Example 9, the graphs of $3x - y = 3,\; 5x + y = 21$ intersect at point $P$ whose coordinates are —

In Example 9, the graphs of $3x - y = 3,\; 5x + y = 21$ intersect at point $P$ whose coordinates are —